HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 607
HD6432160
Manufacturer Part Number
HD6432160
Description
Hitachi 16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6432160.pdf
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Figure 21.2 shows the operation timing.
1. Scan mode is selected (SCAN = 1), scan group 0 is selected (CH2 = 0), analog input channels
2. When A/D conversion of the first channel (AN0) is completed, the result is transferred to
3. Conversion proceeds in the same way through the third channel (AN2).
4. When conversion of all the selected channels (AN0 to AN2) is completed, the ADF flag is set
5. Steps 2 to 4 are repeated as long as the ADST bit remains set to 1. When the ADST bit is
State of channel 0 (AN0)
State of channel 1 (AN1)
State of channel 3 (AN3)
State of channel 2 (AN2)
AN0 to AN2 are selected (CH1 = 1, CH0 = 0), and A/D conversion is started (ADST = 1).
ADDRA. Next, conversion of the second channel (AN1) starts automatically.
to 1 and conversion of the first channel (AN0) starts again. If the ADIE bit is set to 1 at this
time, an ADI interrupt is requested after A/D conversion ends.
cleared to 0, A/D conversion stops. After that, if the ADST bit is set to 1, A/D conversion
starts again from the first channel (AN0).
Notes: 1. Vertical arrows ( ) indicate instructions executed by software.
ADDRA
ADDRB
ADDRC
ADDRD
ADST
ADF
2. Data currently being converted is ignored.
Idle
Figure 21.2 Example of A/D Converter Operation
(Scan Mode, Channels AN0 to AN2 Selected)
Idle
A/D conversion 1
Idle
Set*
1
A/D conversion 2
Transfer
Continuous A/D conversion execution
A/D conversion result 1
Idle
A/D conversion 3
Idle
Idle
A/D conversion 4
A/D conversion time
Rev. 2.0, 08/02, page 567 of 788
A/D conversion result 2
A/D conversion result 3
A/D conversion 5
A/D conversion result 4
Clear*
*
2
Idle
Idle
Idle
1
Clear*
1
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